The word "swish" is an onomatopoeic verb that refers to a quick, sweeping motion with something in your hand. It can be used to describe the sound and action of swinging or flicking something back and forth through the air, often with great speed and precision. The term can also refer to a particular basketball move where the player quickly dribbles the ball between their legs while running, creating an impressive visual effect known as "the swish." In addition, it can be used figuratively to describe someone moving or acting in a confident, stylish manner.